Average of 12 numbers 50. If average of 7 is 45, average of remaining 5? MCQ with Answer and Explanation

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Average of 12 numbers 50. If average of 7 is 45, average of remaining 5?

A. 60

B. 55

C. 58

D. 57

Answer: Option D

Solution (By JKSSB Mock Tests)

Sum12=600. Sum7=315. Remaining=285. Average=57.

This question belongs to: Maths Average

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Question #1

Average of 8 numbers 55. If average of 5 is 50, average of remaining 3?

A. 60

B. 63.33

C. 65

D. 62

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Correct Answer: Option B

Explanation:
Sum8=440. Sum5=250. Remaining=190. Average≈63.33.

This question belongs to: Maths Average

Question #2

The average of 4 numbers is 24. If each number is multiplied by 4, what is the new average?

A. 24

B. 96

C. 72

D. 48

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Correct Answer: Option B

Explanation:
New average =24×4=96.

This question belongs to: Maths Average

Question #3

The average of 840,1120,1400 is

A. 1110

B. 1115

C. 1130

D. 1120

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Correct Answer: Option D

Explanation:
3360/3=1120.

This question belongs to: Maths Average

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